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RocksDB for Erlang
Retired package: Release invalid - Build broken, use 2.6.2
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deps/rocksdb/utilities/merge_operators.cc
// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "utilities/merge_operators.h"
#include <memory>
#include "rocksdb/merge_operator.h"
#include "rocksdb/options.h"
#include "rocksdb/utilities/customizable_util.h"
#include "rocksdb/utilities/object_registry.h"
#include "utilities/merge_operators/bytesxor.h"
#include "utilities/merge_operators/max_operator.h"
#include "utilities/merge_operators/put_operator.h"
#include "utilities/merge_operators/sortlist.h"
#include "utilities/merge_operators/string_append/stringappend.h"
#include "utilities/merge_operators/string_append/stringappend2.h"
#include "utilities/merge_operators/uint64add.h"
namespace ROCKSDB_NAMESPACE {
static int RegisterBuiltinMergeOperators(ObjectLibrary& library,
const std::string& /*arg*/) {
size_t num_types;
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(StringAppendOperator::kClassName())
.AnotherName(StringAppendOperator::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new StringAppendOperator(","));
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(StringAppendTESTOperator::kClassName())
.AnotherName(StringAppendTESTOperator::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new StringAppendTESTOperator(","));
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(SortList::kClassName())
.AnotherName(SortList::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new SortList());
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(BytesXOROperator::kClassName())
.AnotherName(BytesXOROperator::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new BytesXOROperator());
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(UInt64AddOperator::kClassName())
.AnotherName(UInt64AddOperator::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new UInt64AddOperator());
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(MaxOperator::kClassName())
.AnotherName(MaxOperator::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new MaxOperator());
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(PutOperatorV2::kClassName())
.AnotherName(PutOperatorV2::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new PutOperatorV2());
return guard->get();
});
library.AddFactory<MergeOperator>(
ObjectLibrary::PatternEntry(PutOperator::kNickName()),
[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
std::string* /*errmsg*/) {
guard->reset(new PutOperator());
return guard->get();
});
return static_cast<int>(library.GetFactoryCount(&num_types));
}
Status MergeOperator::CreateFromString(const ConfigOptions& config_options,
const std::string& value,
std::shared_ptr<MergeOperator>* result) {
static std::once_flag once;
std::call_once(once, [&]() {
RegisterBuiltinMergeOperators(*(ObjectLibrary::Default().get()), "");
});
return LoadSharedObject<MergeOperator>(config_options, value, result);
}
std::shared_ptr<MergeOperator> MergeOperators::CreateFromStringId(
const std::string& id) {
std::shared_ptr<MergeOperator> result;
Status s = MergeOperator::CreateFromString(ConfigOptions(), id, &result);
if (s.ok()) {
return result;
} else {
// Empty or unknown, just return nullptr
return nullptr;
}
}
} // namespace ROCKSDB_NAMESPACE